This document discusses common article usage errors made by Brazilian English language learners and provides rules and examples to help them improve. It addresses the indefinite articles "a" and "an", the definite article "the", and situations where no article is used. Examples are given of errors such as overusing or omitting articles. Guidelines are presented for determining whether to use "a/an", "the", or no article depending on factors like nouns starting with vowels or consonants, level of specificity, or abstractness. The purpose is to help ELLs properly apply article usage.